sparql

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trustgraph-ai / trustgraph

The context interoperability layer powered by hypergraphs. Build a unified semantic context layer where agentic outcomes are deterministic and agent behavior is not just traceable, but cryptographically verifiable.

agent open-source graph sparql rdf owl ontology context knowledge-graph hypergraph workflow-automation explainable-ai determinism holon context-graph context-engineering agent-harness context-harness graph-engineering

Updated Aug 23, 2026
Python

RDFLib / rdflib

Star

RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.

Updated Aug 19, 2026
Python

oxigraph / oxigraph

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SPARQL graph database

sparql graph-database rdf-store

Updated Aug 22, 2026
Rust

semantalytics / awesome-semantic-web

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A curated list of various semantic web and linked data resources.

awesome sparql rdf semantic-web owl awesome-list r2rml

Updated Aug 14, 2026

eBay / akutan

Star

A distributed knowledge graph store

go graph sparql rdf

Updated Jul 18, 2019
Go

apache / jena

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Apache Jena, A free and open source Java framework for building Semantic Web and Linked Data applications.

sparql rdf apache jena

Updated Aug 21, 2026
Java

blazegraph / database

Star

Blazegraph High Performance Graph Database

sparql rdf graph-database tinkerpop blazegraph

Updated Apr 16, 2023
Java

openlink / virtuoso-opensource

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Virtuoso is a high-performance and scalable Multi-Model RDBMS, Data Integration Middleware, Linked Data Deployment, and HTTP Application Server Platform

sql sparql databases virtuoso-server

Updated Aug 5, 2026
C

ontop / ontop

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Ontop is a platform to query relational databases as Virtual RDF Knowledge Graphs using SPARQL

java sparql owl ontop r2rml obda virtual-knowledge-graph vkg

Updated Jul 13, 2026
Java

ad-freiburg / qlever

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Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine

sparql semantic-search-engine query-engine sparql-endpoints text-search

Updated Aug 22, 2026
C++

aws / graph-notebook

Star

Library extending Jupyter notebooks to integrate with Apache TinkerPop, openCypher, and RDF SPARQL.

jupyter graph sparql rdf neptune jupyter-notebook apache gremlin tinkerpop cypher opencypher jupyter-widgets

Updated Aug 5, 2026
Jupyter Notebook

GrafeoDB / grafeo

Sponsor

Star

Grafeo is a pure-Rust, high-performance graph database that can be embedded as a library or run as a standalone database, with optional in-memory or persistent storage. Grafeo supports both LPG and RDF and all major query languages.

python graphql graph-algorithms sparql rdf knowledge-graph gql graph-database gremlin cypher graph-analytics in-memory-database lpg labeled-property-graph graphchallenge resource-description-framework grafeo grafeodb

Updated Aug 10, 2026
Rust

inception-project / inception

Star

INCEpTION provides a semantic annotation platform offering intelligent annotation assistance and knowledge management.

java machine-learning sparql uima knowledge-base active-learning annotation-tool entity-linking annotation-editor annotation-suggestions

Updated Aug 19, 2026
Java

DerwenAI / kglab

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Graph Data Science: an abstraction layer in Python for building knowledge graphs, integrated with popular graph libraries – atop Pandas, NetworkX, RAPIDS, RDFlib, pySHACL, PyVis, morph-kgc, pslpython, pyarrow, etc.